21st Century
- Sierra Leone Civil War (2000)
- War on Terror (2001–Present)
- War in Afghanistan (2001–Present)
- Iraq War and Iraqi insurgency (2003–2009)
- Libyan Civil War (2011)
Read more about this topic: Military History Of The United Kingdom
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“Often even a whole city suffers for a bad man who sins and contrives presumptuous deeds.”
—Hesiod (c. 8th century B.C.)